Patent US3067587A successfully refreshed from Google Patents.
Patent US2653192A successfully refreshed from Google Patents.
US2653192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone apparatus
Assignee: Individual
•
Filing: 1949-01-07
•
Granted: 1953-09-22
•
Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 Shipton Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:56
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/52; H04M1/02; H04M1/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1181947A
Cited
US1432623A
Cited
FR732906A
Cited
US2079089A
Cited
US2109761A
Cited
US2214992A
Cited
US2131593A
Cited
US2224698A
Cited
US2490637A
Cited
US2433295A
Cited
US2497336A
Cited
US2506715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |